All of the companies traded on the Nasdaq have four-lettered ticker symbols, which are representative of the actual company. For example, the ticker symbol for Nasdaq-traded Microsoft is MSFT. However, in some cases, a ticker symbol on the Nasdaq will have five letters, and the fifth letter is an identifier symbol that tells market participants something about the company
All of the companies traded on the Nasdaq have four-lettered ticker symbols, which are representative of the actual company. For example, the ticker symbol for Nasdaq-traded Microsoft is MSFT. However, in some cases, a ticker symbol on the Nasdaq will have five letters, and the fifth letter is an identifier symbol that tells market participants something about the company
https://www.investopedia.com/ask/answers/06/nasdaqfifthlette...